Viscous composition

Abstract

A viscous composition of the present invention comprises specific cellulose fibers (A), (A′) and (A″) which are selected according to uses of a cosmetic composition, a gel-like composition and a spray composition. By using the composition of the present invention, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics; a gel-like composition wherein gel-state can be kept without separation or water release; and wherein various functional additives which is necessary for the use is mixed without any problem can be obtained.

Description

TECHNICAL FIELD[0001]The present invention relates to a viscous composition including cellulose fibers.BACKGROUND ART[0002]As a viscous composition, there are mentioned a cosmetic composition for use for various cosmetics and others; a gel-type composition for use for promotion of viscosity increase or for gelation; and further a spray composition for use for spray nebulization, etc.[0003]Heretofore, for cream-type, gel-type, emulsion-type or liquid-type cosmetic materials, a composition is used wherein a polymer material or the like is mixed with a dispersant medium such as water, alcohol, oil or the like. The polymer material is used for the purpose of imparting shape retention performance (shape retention capability) for maintaining viscosity increase and dispersion stability, and for example, water-soluble cellulose derivatives such as methyl cellulose, carboxymethyl cellulose salt, etc.; synthetic polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, ...

AI Technical Summary

Benefits of technology

[0053]As in the above, the viscous composition of the present invention includes the above-mentioned special cellulose fibers (A), (A′) or (A″). For use as a cosmetic composition, the cellulose fibers of the above component (A) are combined with water (B) and the functional additive (C) such as a water-releasing material or the like to give a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics. Since the specific cellulose fibers (A) are extremely fine, the composition provides an excellent feeling in use for when application to skin, with neither sticky feeling nor rough feeling. In addition, the cosmetic composition is free from viscosity decrease even at a high temperature of 50° C. or more, and is excellent in temperature stability.

[0054]Furthermore, since the cellulose fibers in which the hydroxyl group at the C6 position of the glucose unit on the surface of the cellulose fibers is selectively oxidized into an aldehyde group and a carboxyl group are used therein, the cosmetic composition can easily provide surface smoothness which conventional cellulose fine particles could not provide, and is free from a feeling of stickiness which is specific to water-soluble polymers. In addition, the cosmetic composition containing salts here can be thickened and the dispersion stability thereof can be obtained which are difficult in the conventional cases containing cellulose fine particles and a water-soluble polymer and salt tolerance is to enhance salt tolerance is enhances as a result.

[0055]In case where the cellulose fibers of the component (A) are such that a part of the hydroxyl group of the cellulose fibers is oxidized with a co-oxidizing agent in the co-presence of an N-oxyl compound such as 2,2,6,6-tetramethylpiperidine (TEMPO) or the like, the cellulose fibers may be easily processed to give microfine fibers having a number-average fiber diameter of rom 2 to 100 nm to facilitate the production of the cosmetic composition.

[0056]In case where the viscous composition of the present invention is used as a gel-type composition, the cellulose fibers (A′) of the above-mentioned special cellulose fibers are combined with (B) water. In the gel-type composition including the components, the content of the fine cellulose fibers (A′) falls within a range of from 0.3 to 5.0% by weight of the entire gel-type composition. Therefore, even in the co-presence of a salt, an ionic surfactant or the like, the composition can maintain the gel state thereof without separation or water release. In addition, the gel-type composition of the present invention is easy to use, since it is not stringy and is easily mixed with various types of functional additives.

[0057]In addition, since the gel-type composition can sufficiently keep the viscosity thereof even in high-temperature environments, it is usable, for example, for in-car applications to be used at high in-car temperatures of 70° C. or more (aromatic substances, deodorants, air refreshers, etc. for automobiles). On the other hand, since natural polysaccharide gelling agents such as gelatin, agarose and others undergo sol-gel transition at high temperatures and could not keep the viscosity as gel, they are unsuitable for such applications.

[0058]The gel-type composition including the specific cellulose fibers and water (liquid dispersion medium) is well miscible with functional additives such as inorganic salts, surfactants and the like, and can be widely favorably used as a gel substrate for toiletry goods such as aromatic substances, etc.

Problems solved by technology

However, they are sprayed, they immediately liquefy owing to the spraying pressure, and can be well sprayed to a subject to coat it.